Swimming Stroke Abbreviations Adam Oxner December 12, 2018 16:07 Updated FR = Freestyle FL = Butterfly BK = Backstroke BR = Breaststroke IM = Individual Medley FRIM = Freestyle IM K = Kick P = Pull P/S = Pull or Swim ST = Stroke (usually means "anything but freestyle") CH = Choice DR = Drill Related articles Freestyle IM - (FrIM) Kick Individual Medley (IM) Drill Pulling
